Even without "spam" how large do you think the blockchain will be in 10 or 20 years? Potentially billions of people will be using bitcoin at that point, it will be huge compared to what we have now. What happens then? Roughly 2-4% of the blockchain has some kind of media/images on it today. Are people going to run nodes if the blockchain is 25TB (without images) or will they say it's too big? You have zero evidence of Core corruption, that's just fake news being spread by people trying to fool you.